Central Building Research Institute. Annual report 1956-57. Central Building Research Institute.
Chicago-čujuhus (17. p.)Central Building Research Institute. Annual Report 1956-57. Roorkee: Central Building Research Institute.
MLA-čujuhus (9. p.)Central Building Research Institute. Annual Report 1956-57. Central Building Research Institute.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.